Implementation of real-time high speed convolution using DSP

Circular convolution is much more effective than linear convolution in a real-time signal processing system since it has successive inputs of data. By providing hardware for circular convolution, DSP (digital signal processor) allows for such high speed convolution processing which happen frequently during the treatment of the time domain of signals. In this paper, we propose an efficient way to implement circular convolutions in DSP. In order to verify the performance, we compute the speed of linear and circular convolutions module in DSP, and verify that the speed increases by 2.78 ∼ 7 times by implementing the proposed circular convolutions.